I can connect with no problem to my 2820Vn over the Internet with either Smart VPN Client or Win7's VPN client using L2TP over IPSec. I can see the remote network via IP but the client gets a Default Gateway of 0.0.0.0 as displayed by ipconfig. Despite "Use default gateway on remote network" being ticked in Smart VPN Client etc.

I been through the FAQ's etc but am stumped how to get the correct Default Gateway passed to the client.

Any idea where I'm going wrong?